scribner



G. E. SGRIBNER. SPEED REGULATOR FOR DYNAMOS.

4 SheetsSheet 1.

(No Model.)

Patented July '7, 1896.

(No Model.) 4 SheetsSheet 2.

0'. E. SCRIBNER. SPEED REGULATOR FOR DYNAMO NO. 563,316. Patent 1316 7,1896.

(No Model.) 4 Sheets-Sheet a.

O. E. 'SGRIBNER. SPEED REGULATOR FOR DYNAMOS.

No. 563,316. Patented July 7, 1896.

fl/draamea' I 722167225 1 M B MW (NoModelJ 4Sheets-Sheet 4. O. E.SORIBNER.

v SPEED REGULATOR FOR DYNAMbs. No. 563,316. Patented July 7, 1896.

UNITED STATES PATENT OFFICE.

CHARLES E. SCRIBNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE \VESTERNELECTRIC COMPANY, OF SAME PLACE.

SPEED-REGULATOR FOR DYNAMOS.

SPECIFICATION forming part of Letters Patent No. 563,316, dated July 7',1896. Application filed December 10, 1888- Serial No. 293,167. (Nomodel.)

To ctZZ whom it may concern: Serial No. 194,369, for United StatesLetters Be it known that I, CHARLES E. SCRIBNER, Patent, filed March 8,1886, for automatic a citizen of the United States, residing atChiregulators for dynamo-electric machines. cago, in the county of Cookand State of Illi- The form of the device for causing power c 5 nois,have invented a certain new and useful to be exerted by changes in thecurrent Improvement in Speed-Regulators forDynastrength I do notconsider material, since mos, of which the following is a full, clear,there are other devices well known in the art concise,andexactdescription,referencebeing which might be readily adapted to dothis had to the accompanying drawings, forming work. I will therefore,without further de- IO a part of this specification. scription, assumethat we have a device which My invention relates to currentregulators isconstructed to exert force alternately in for dynamo-electric machines.Heretofore opposite directions as the current tends to regulation ofcurrent has been effected in diffluctuate slightly above and below thepreferent ways. In one class of machines the determined normal strength.Sucha device 1 5 current strength of the field-magnets is varied may betermed the responsive controller,no as required to maintain the currentstrength. matter what its form or construction maybe. In another type ofregulators the brushes are My invention consists in the combination,moved upon the commutator, the movement with tho responsive controllerof the driving being effected by means of an electromagnet mechanism ofthe machine, of a pulley so 20 included in the main circuit mechanicallyarranged that the rate of revolution of the connected with thebrush-carrier. armature may be varied automatically to In my inventionherein Iprovide an electromaintain the current at practically the samemagnetic device in the main circuit which is strength. adapted, inresponse to changes in the cur- My invention is illustrated in theaccom- 25 rent, to operate upon the driving-pulley of panying drawings,in which the machine to change its rate of revolution Figure 1 is a sideelevation, partly in secand thus the rate of revolution of the armation,of driving mechanism with which the reture. Thus increase of currentstrength sponsive controlleris adapted to be connected above the normaloperates to reduce the numto vary the speed thereof. Fig. 2 is a front ober of revolutions per second of the armature, View of the Samepartially in Section and the while decrease of current strength belowthe responsive controller connected therewith. normal operates toincrease the number of Fig. 3 is a detailed view showing the circularevolutions per second of the armature, in tion of the oil, glycerin, orother fluid in the this manner changing the electromotive force pulleyin controlling the movement thereof. 8 5 without wasteful use of power,so that the Fig. at is a detailed sectional view upon line powerexpended may be simply what is re- X X of Fig. 3. Fig. 5 is a diagramillustrative quired to supply electricity to the lamps or of thecircuits.

other translating devices included in the cir- Like parts are indicatedby similar letters cuit, more lamps requiring more power and ofreference throughout the different figures. 0 less lamps less. The mainshaft a may be driven by any One element of my invention herein maysuitable power. Upon this shaft I have pro be a driven mechanism whosedirection of vided a gear-wheel b, which is keyed to the movement isdetermined by the current passhaft and adapted to be turned thereby. The

sing through an electromagnetic device in the pulley a proper surroundsthe same and is 9 5 45 circuit of the machine, current above the adaptedto be driven by the gear-wheel, its

normal causing movement in one direction rate of movement, however,being determined and current below the normal causing moveby theresistance of the liquid contained in ment in the opposite direction.Heretofore the reservoir or chambers surrounding the I have used adriven mechanism thus congear-wheel, this resistance being controlled 50trolled, connected with the brush-carrier, as by a valve. The action ofmy pulley is analwill be seen by reference to my application, ogous tothat of a pump.

In case the duct between the opposite chambers is completely closedthere is no vent for the liquid, and the liquid, instead of circulating,will resist the movement of the gearwheel within the reservoir, and thusthe pulley will be driven at the same rate as the gear-wheel. If,however, the duct is wide open, the wheel may be driven round and roundin the reservoir, pumping the liquid from one chamber to the otherwithout rotat ing the pulley. The responsive controller d, as shown inFig. 2, is connected with the valve 6 in the duct between the chambersin such manner that increase of current will move the responsivecontroller in a direction to open the valve until the speed of thepulley is reduced sufficiently to reduce the rate of revolution of thearmature of the dynamomachine, so as to reduce the electromotive forcesufficiently to keep the current down at the desired strength.

In case the current falls below the normal the responsive controller isoperated to gradually close the valve more and more until the rate ofmovement of the pulley and that of the armature belted thereto will beincreased sufficiently to maintain the current strength.

As shown more clearly in Figs. 2 and 4, the chambers or ports f g areprovided on opposite sides of the pulley and connected together by theduct or pipe 71, in which duct is placed a suitable valve 6. The actionof the pump is to force the liquid from chamber 9 to chamber f, andthence through the duct it back to chamber g, thus keeping up thecirculation.

The circulation of the liquid is indicated by the arrows in Figs. 3 and4..

The pinions 10 mesh with the gear-wheel and are turned in the directionindicated whenever there is any movement of the gearwheel within thepulley, the cogs of the pinions acting to carry the oil from duct 1 onone side of each pinion to duct 'm on the other side, as indicated bythe arrows. Thus the liquid tends to circulate from chamber 9 to chamberf, passing through the ducts Z, leading out of chamber g to the ducts m,leading into chamber f, the circulation being completed through the mainduct or pipe h, which contains the controlling-valve e.

The connecting pipe h is revolved with the pulley. The valve-lever n isfreeto revolve about the shaft a, and the connecting-rod 0 of theresponsive controller is linked to the shifting-rod p, which, throughthe collar q, operates the lever 11 as the connecting-rod 0 is moved inone direction or the other. Thus forward movement of the connecting-rodo forces the lever n inwardly, thus closing the valve 6 enough toobstruct the circulation of the liquid and thereby cause the rate ofn10- tion of the pulley to be increased to the extent required to bringthe electromotive force up sufficiently to maintain the currentstrength. Motion of the connecting-rod in the opposite direction servesto open the valve more and more until the circulation of the liquid ismade free enough to permit the pulley to slip, as it were, upon thegearwheel, thus reducing the rate of revolution of the pulley to theextent required to reduce the speed of the armature of the machine andthus prevent the current from becoming stronger than the predeterminednormal strength.

It will be observed that each of the pinions is placed between twosubports or ducts Z m. The wings forming the cogs of the pinions arefitted to the interior concave surface of its subchamber, as shown, sothat each in its revolution carries the liquid in the directionindicated. The partitions 0' should be of the thickness shown in orderthat there may be no objectionable leakage between the differentsubchambers.

The arrangement of electrical connections and of the responsive deviceto the speedcontrolling pulleyis shown in Fig. 5, in which the dynamo qis shown in a series circuit with the responsive controller (1 and anumber of arc-lamps r r.

The responsive controller is connected to the liquid pulley-speedcontroller by the connecting-rod 0 and lever p. The dynamo q is shownconnected by a belt 8 with the liquid pulley-speed controller.

My liquid pulley-speed controller as thus described I have foundsatisfactory and adapted to do the work required. It is evident,however, that any other controllable yielding connection between thedriving-pulley and the driven shaft operated by a responsive controllerwould be within my invention, considered broadly. I therefore do notlimit myself to the details of the constructions shown.

I have described my invention in connection with a regulator fordynamo-electric machines; but the speed-regulator or hydraulic-clutchfeature of my invention is applicable for other purposes.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination with a responsive controller for adynamo-electric machine, of a pulley belted to the armature-shaft fordriving said machine, a driven shaft upon which said pulley is mounted,a speed-varying engagement mechanism between said pulley and said drivenshaft, said engagement mechanism being connected with the responsivecontroller whereby the speed of the armature is regulated to maintain apractically uniform current strength; substantially as described.

2. The combination with a responsive controller for a dynamo-electricmachine, of a pulley containing a reservoir formed with subchambers, agear-wheel working within said reservoir, a shaft upon which saidgearwheel is mounted, pumping devices operated by the movement of thegear-wheel to force liquid contained in said reservoir from a IlOchamber on one side of the pulley to a chamber on the other sidethereof, a pipe connecting said chambers, and a valve located in saidpipe and operated by said responsive device; substantially as described.

3. The combination with the driven shaft, of the gear-wheelrigidlysecured thereto, the pulley surrounding said gear-wheel, thepinions is, which mesh with the gear-wheel, the subchambers for thepinions, and the common chambers f g on opposite sides of the pulley,the ducts Zleading out of chamber g to the ducts m leading into chamberf, and the main pipe or duct h, which contains the controlling-valve e,and the responsive controller connected with said valve, substantiallyas and for the purpose specified.

4E. The combination with a dynamo, of a driving-shaft for rotating thearmature thereof, a hydraulic clutch interposed between saiddriving-shaft and said armature, said clutch comprising tworelatively-moving parts, mechanism for controlling a liquid confinedbetween said parts to vary the speed of relative movement of said parts,and a responsive controller for said dynamo for controlling theoperation of said mechanism; substantially as described.

5. The combination of a wheel mounted loosely upon a shaft, afiuid-flow-producing means adapted to connect said wheel and shaft, saidfiuid-flow-producing means being operated by the 'relative movement ofsaid wheel and shaft, and a controlling device for regulating the fluidflow whereby the wheel and shaft may be driven at the same or differentvelocities.

6. A clutching device consisting of a cylinder and its inclosedvalve-wheel and valves, whereby the application of a liquid shall causethe clutching and unclutching of the driver and the driven parts.

7. The combination, with a driving-shaft, of a pulley loosely supportedthereon, and a piston, in a chamber of the pulley, engaged by the shaftand actuated by the rotation thereof to compress a fluid in said chamberagainst the pulley and thereby form a fluid binding medium between thepulley and the shaft to cause the movement of the shaft to be impartedto the pulley.

8. A clutching device comprising a continuously-movingpart, a partmovable at will, and mechanism operated to control a liquid confinedbetween the said parts, whereby said parts may be locked and released.

9. The combination of a rotary pump having intercirculatory passages,mechanism which connects the pump-shell with the object to be driven,and means for partially or wholly closing said passages.

10. In a hydraulic clutch, the combination with the two relativelyrotatable parts, of intermeshing teeth provided upon said parts, acasing forming with said rotatable parts two chambers, a fluidconnection between said parts, and means for controlling the flow ofliquid in said connection; substantially as described.

11. In a hydraulic clutch, two ormore relatively rotary bodies providedwith intermeshing teeth, a casing therefor forming with the.

said bodies two chambers, a fluid connection between said chambers, andmeans for controlling the flow of liquid in such connection.

12. The combination with a driving-shaft and a pulley loosely supportedthereon, of means for compressing a liquid against the pulley by therotation of the driving-shaft, thereby to form a liquid binding mediumbetween the shaft and pulley and cause the movement of said shaft to beimparted to the pulley, and a governor operating automatically tocontrol the degree of fluid compression against the pulley and therebyregulate the speed of rotation of the pulley with relation to that ofthe shaft.

In witness whereof I hereunto subscribe my name this 1st day ofDecember, A. D. 1888.

CHARLES E. SORIBNER.

\Vitnesses:

GEORGE P. BARTON, OHAs. G. HAWLEY.

